Wanted to shout out a project I have found very useful: https://jmp.chat .

It is a #XMPP to #PSTN bridge service that for under $4/month provides you with a PSTN number where all calls (150 mins/month for US) and SMS/MMS (unlimited) go to your #XMPP account. It's nice to have a second number that I can text/call from on all of my devices!

#VoIP is supported for making calls as well. They currently have data-only #SIMs / #eSIMS in the works too. You can also pay in #btc if you want.